Product Details  usb disk usb memory1)best quality,lowest price,,hot sale 2) newest usb,pocket-sized for delivery, 3)high transfer rate,hign s  usb disk usb memory Specification  Available Capacities :256MB,512MB,1GB,2GB,4GB,8GB,16GB or above. Compatibility PC or Mac with a USB interface  Operating Systems Windows Vista/XP/2000/ME/98/95, Mac OS 8.6 and above, Linux 2.4.X  Drivers Only required for Windows 98/95. Online download available  Transfer Rate High Speed USB 2.0. USB 1.1 Compatible  Data retention 10 Years Minimum  Warranty :5 years Warranty